Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Securities available for sale at fair value, amortized cost	$ 178,300	$ 227,331
Loans held for sale, fair value	$ 6,617	$ 7,827
Preferred stock, no par value
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	21,500	21,500
Preferred stock, shares outstanding	21,500	21,500
Preferred stock, liquidation preference per share	$ 1,000	$ 1,000
Common stock, no par value
Common stock, shares authorized	15,000,000	15,000,000
Common stock, shares issued	3,422,379	3,385,079
Common stock, shares outstanding	3,422,379	3,385,079